To be an Authoritative DNS server you need 2 static IP addresses.
Preferably on different ISP's so your domain (web site) will always resolve to the correct IP address if the main NS (namespace) goes down.
Port 53 must be open in your router and local firewall for a DNS server to work
For this example we have 5 static IP addresses for the domain of example.com with a IP address of 192.168.10.122
With subdomains of:
mail.example.com: 192.168.10.123
ftp.example.com: 192.168.10.124
www.example.com: 192.168.10.125
afp.example.com: 192.168.10.126
+ 1 more static IP address, preferably on another ISP for your secondary DNS server. (ask a friend)
anotherdomain.com: 10.0.10.56
Please note IP addresses shown are for illustration purpose only.
~ DNS Server : A & PTR Records ~
1. Open Server Admin
2. Under Computer and Services click DNS
3. Click Settings
4. Click Zones
5. Under Zones column click the +
6. Zone Name: example.com.
7. Type: Master
8. SOA: ns.example.com.
9. Admin email: admin.example.com.
10. Click: OK
11. Click: Save
12. Under Records in Zone example.com. click the +
13. Record type: Namespace (NS)
14. Name Server: anotherdomain.com.
15. Click: OK
18. Click the + again
19. Record type: Address (A)
20. Map from: example.com.
21. Map to: 192.168.10.122
22. Click: OK
23. Click the + again
24. Record type: Address (A)
25. Map from: anotherdomain.com.
26. Map to: 10.0.10.56
27. Click: OK
28. Click the + again
29. Map from: mail.example.com.
30. Map to: 192.168.10.123
31. Click: OK
32. Click the + again
33. Map from: ftp.example.com.
34. Map to: 192.168.10.124
35. Click: OK
36. Click the + again
37. Record type: Address (A)
38. Map from: www.example.com.
39. Map to: 192.168.10.125
40. Click: OK
36. Click the + again
41. Record type: Address (A)
42. Map from: afp.example.com.
43. Map to: 192.168.10.126
44. Click: OK
~ Very Important ~
Make sure to put the ( . ) period after the domain name.
~ DNS Server : MX Records ~
41. Click the + again
45. Record type: Mail Exchanger (MX)
46. Map from: example.com.
47. Mail Exchanger: mail.example.com.
48. Precedence Number: 0 (lower numbers get used 1st, so your back up mail server would have 5 so if the 1st mail server's down it will use your back up, ie the one with the higher number)
46. Click: OK
47. Click the + again
48. Record type: Mail Exchanger (MX)
49. Map from: example.com.
50. Mail Exchanger: mail.anotherdomain.com.
51. Precedence Number: 5
52. Click: OK
53. Click: Start Service
